A Pilot Study to Test Activity of Antimalarial Drugs Against an Induced Malaria Infection in Healthy Volunteers
Model scores of the 29,894 trials active now.
Model score 3% for any early termination, 1% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 18% of the time (283 trials).
Finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
How it ended
Completed on 2010-08-31, after 2010-01-31 start.
The score above never used this outcome: finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
Termination over time, as the model saw it at the start
Cumulative chance of ending terminated (red) or completed (green) by each year from its start; it actually ended on 2010-08-31. The rest of the way to 100% is still running.
From the competing-risks survival model (termination vs completion, still-running trials censored), fit to trials that started 2008–2014 and recalibrated to termination rates over 2022–2024, since termination has become more common. Checked on past years, it still ran a little low when the rise continued.
What moved the score
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Wording of the registration (title, summary, criteria) (lowers risk) · Wording
Phrases that raised it: cardiacevidenceiidiseaseqtc
Phrases that lowered it: healthyvolunteersmalethe efficacyblood -
Accepts healthy volunteers: Yes (lowers risk) · Who can join
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Primary purpose: not given (lowers risk) · Design
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Sponsor's past termination rate: 0% (lowers risk) · Sponsor's track record
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Collaborators: 3 (lowers risk) · Design
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Phase: 1/2 (raises risk) · Design
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Design: parallel (raises risk) · Design
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Responsible party: not given (raises risk) · Design
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Sponsor type: academic or other (raises risk) · Sponsor's track record
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Disease area, cancer: No (lowers risk) · Disease area
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Has a data monitoring committee: No (lowers risk) · Design
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Minimum age: 18 (raises risk) · Who can join
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Maximum age: 45 (lowers risk) · Who can join
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Disease area, neurology: No (lowers risk) · Disease area
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
Every input that moved this score, largest first: SHAP contributions in log-odds, red raising risk and green lowering it. They describe the model, not causes of termination. Phrases are traced from the text features back to this registration's words, approximately.
The trial
Design
- Phase
- 1/2 (typical: 2)
- Number of arms
- 2
- Allocation
- randomized
- Design
- parallel
- Primary purpose
- not given (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- No (typical: 56% yes)
- Responsible party
- not given (typical: sponsor)
- Collaborators
- 3 (typical: 0)
- Keywords listed
- 3 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 45 (typical: 71)
- Sex
- male (typical: all)
- Accepts healthy volunteers
- Yes (typical: 9% yes)
Sponsor's track record
- Sponsor type
- academic or other
- Sponsor's past trials
- 10 (typical: 32)
- Sponsor's past termination rate
- 0% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 1 (typical: 19)
Drug's FDA history
- Drugs with FDA adverse-event history
- 0 (typical: 1)
- Drug has FAERS history
- No (typical: 64% yes)
- Drug's FAERS reports before start
- 0 (typical: 2148)
- Drug's FAERS reports in the prior 12 months
- 0 (typical: 412.5)
- Drug's FAERS reports marked serious
- no FAERS history (typical: 85.6%)
- Drug's FAERS reports with a death
- no FAERS history (typical: 15.9%)
Disease area and drugs
- Disease areas
- none of the 14 tracked areas
- Drugs matched to FDA substances
- none matched
Typical values are among the trials active now. Sponsor and drug history are counted only up to this trial's start date.
Similar finished trials
- Optimization of Controlled Human Malarial Infection by Injection of P. Falciparum Sporozoites in Non-Immune Adults NCT01771848 · started 2012 · scored riskier than 2% of active trials completed
- Experimental Falciparum Transmission to Anopheles NCT02431637 · started 2015 · scored riskier than 3% of active trials completed
- Controlled Human Malarial Infection by Intravenous Injection of Plasmodium Falciparum Sporozoites in Non-Immune Adults NCT01624961 · started 2012 · scored riskier than 3% of active trials completed
- Blood-Stage Plasmodium Vivax Cell Bank NCT05095272 · started 2022 · scored riskier than 4% of active trials completed
- MMV533 Plasmodium Falciparum Volunteer Infection Study NCT05205941 · started 2022 · scored riskier than 7% of active trials completed
Closest by meaning of the registration text (PubMedBERT embeddings), among finished trials. How they ended is context, not an input to this trial's score.